CY7C964

64 fax id: 5604 CY7C964 Bus Interface Logic Circuit Features Comparators, counters, latches, and drivers minimize logic requirements for a variety of multiplexed and non-multiplexed buses Directly drives VMEbus address and data signals 8-bit comparator for slave address decoding Flexible interface optimized for VMEbus applications Companion device to Cypress VMEbus family of components Replaces multiple SSI/MSI components Cascadable 64-pin QFP and 68-pin PGA packages See the VMEbus Interface Handbook for more information ler. In every case, the controllers provide the control and timing signals to the Bus Interface Logic Circuit as it acts as a bridge between the VMEbus and the Local bus. Application with VMEbus Architecture Use with Cypress VMEbus Controllers The CY7C964 Bus Interface Logic Circuit is a seamless interface between the VIC068A/VIC64 and the VMEbus signals. The device functions equally well in the established 32-bit VMEbus arena and the new 64-bit VMEbus standard. The device contains three 8-bit counters to fulfill the functions of Block counters, and DMA counters as implied by the D64 portion of the VMEbus specification. It also contains the necessary multiplexing logic to allow the 64-bit-wide VMEbus path to be funnelled to and from the 32-bit local bus. Control circuitry is included to manage the switching of the 32-bit address bus during normal (32-bit) operations, and during MBLT (64-bit) operations. The on-chip drivers are capable of...